buried by obama? >> vice president biden just today said that the middle class over the last four years has been, quote, buried. we agree. that means we need to stop digging by electing mitt romney the next president of the united states. >> reporter: that's the kind of zinger sure to be heard at debate number one. i'm steve handelsman, nbc news, denver, colorado. >>> and of course tonight nbc is going to have complete coverage of this first presidential debate anchored by brian williams along the best political team in the business. it all starts at 9:00 p.m. eastern, 6:00 p.m. pacific. >>> elsewhere, a judge in pennsylvania has blocked the state's stricter voter i.d. law from taking effect this november. after weeks of protests, the ruling means that voters in pennsylvania will not have to show a state approved i.d. to cast ballots on election day. the judge said he was concerned that the law could prevent some people from voting. stricter voter i.d. laws in four states remain, but tougher laws in a